85 lines
2.7 KiB
C
85 lines
2.7 KiB
C
/*
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* Copyright 2014 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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// EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL
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// DO NOT USE -- FOR INTERNAL TESTING ONLY
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#ifndef sk_path_DEFINED
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#define sk_path_DEFINED
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#include "sk_types.h"
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SK_C_PLUS_PLUS_BEGIN_GUARD
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typedef enum {
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CW_SK_PATH_DIRECTION,
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CCW_SK_PATH_DIRECTION,
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} sk_path_direction_t;
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/** Create a new, empty path. */
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SK_API sk_path_t* sk_path_new();
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/** Release the memory used by a sk_path_t. */
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SK_API void sk_path_delete(sk_path_t*);
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/** Set the beginning of the next contour to the point (x,y). */
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SK_API void sk_path_move_to(sk_path_t*, float x, float y);
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/**
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Add a line from the last point to the specified point (x,y). If no
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sk_path_move_to() call has been made for this contour, the first
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point is automatically set to (0,0).
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*/
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SK_API void sk_path_line_to(sk_path_t*, float x, float y);
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/**
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Add a quadratic bezier from the last point, approaching control
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point (x0,y0), and ending at (x1,y1). If no sk_path_move_to() call
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has been made for this contour, the first point is automatically
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set to (0,0).
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*/
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SK_API void sk_path_quad_to(sk_path_t*, float x0, float y0, float x1, float y1);
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/**
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Add a conic curve from the last point, approaching control point
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(x0,y01), and ending at (x1,y1) with weight w. If no
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sk_path_move_to() call has been made for this contour, the first
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point is automatically set to (0,0).
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*/
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SK_API void sk_path_conic_to(sk_path_t*, float x0, float y0, float x1, float y1, float w);
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/**
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Add a cubic bezier from the last point, approaching control points
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(x0,y0) and (x1,y1), and ending at (x2,y2). If no
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sk_path_move_to() call has been made for this contour, the first
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point is automatically set to (0,0).
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*/
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SK_API void sk_path_cubic_to(sk_path_t*,
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float x0, float y0,
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float x1, float y1,
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float x2, float y2);
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/**
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Close the current contour. If the current point is not equal to the
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first point of the contour, a line segment is automatically added.
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*/
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SK_API void sk_path_close(sk_path_t*);
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/**
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Add a closed rectangle contour to the path.
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*/
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SK_API void sk_path_add_rect(sk_path_t*, const sk_rect_t*, sk_path_direction_t);
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/**
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Add a closed oval contour to the path
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*/
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SK_API void sk_path_add_oval(sk_path_t*, const sk_rect_t*, sk_path_direction_t);
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/**
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* If the path is empty, return false and set the rect parameter to [0, 0, 0, 0].
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* else return true and set the rect parameter to the bounds of the control-points
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* of the path.
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*/
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SK_API bool sk_path_get_bounds(const sk_path_t*, sk_rect_t*);
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SK_C_PLUS_PLUS_END_GUARD
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#endif
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